Flip-Flops - General Questions Online Exam Quiz
Flip-Flops - General Questions GK Quiz. Question and Answers related to Flip-Flops - General Questions. MCQ (Multiple Choice Questions with answers about Flip-Flops - General Questions
Determine the output frequency for a frequency division circuit that contains 12 flip-flops with an input clock frequency of 20.48 MHz.
Options
A : 10.24 kHz
B : 5 kHz
C : 30.24 kHz
D : 15 kHz
Which statement BEST describes the operation of a negative-edge-triggered D flip-flop?
Options
A : The logic level at the D input is transferred to Q on NGT of CLK .
B : The Q output is ALWAYS identical to the CLK input if the D input is HIGH.
C : The Q output is ALWAYS identical to the D input when CLK = PGT.
D : The Q output is ALWAYS identical to the D input.
Propagation delay time, t PLH , is measured from the ________.
Options
A : triggering edge of the clock pulse to the LOW-to-HIGH transition of the output
B : triggering edge of the clock pulse to the HIGH-to-LOW transition of the output
C : preset input to the LOW-to-HIGH transition of the output
D : clear input to the HIGH-to-LOW transition of the output
How is a J-K flip-flop made to toggle?
Options
A : J = 0, K = 0
B : J = 1, K = 0
C : J = 0, K = 1
D : J = 1, K = 1
How many flip-flops are in the 7475 IC?
Options
A : 1
B : 2
C : 4
D : 8
How many flip-flops are required to produce a divide-by-128 device?
Options
A : 1
B : 4
C : 6
D : 7
Which is not an Altera primitive port identifier?
Options
A : clk
B : ena
C : clr
D : prn
The timing network that sets the output frequency of a 555 astable circuit contains ________.
Options
A : three external resistors are used
B : two external resistors and an external capacitor are used
C : an external resistor and two external capacitors are used
D : no external resistor or capacitor is required
The phenomenon of interpreting unwanted signals on J and K while C p (clock pulse) is HIGH is called ________.
Options
A : parity error checking
B : ones catching
C : digital discrimination
D : digital filtering
What is another name for a one-shot?
Options
A : Monostable
B : Multivibrator
C : Bistable
D : Astable
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